<!DOCTYPE html lang="en-us">
<%# 嵌入式Ruby文件，可以理解为内嵌ruby代码的html，用来解释不同文件中的ruby代码 %>
<html>
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <!-- Latest compiled and minified Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
    <title>Wordguesser</title>
  </head>
  <body>
    <div class="jumbotron">
      <h1 class="display-4">Play Wordguesser!</h1>
    </div>
    <div class="container">
      <%= yield %>
    </div>
  </body>
</div>
</body>
</html>
